Drip tape manufacturing process

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 6620278
SERIAL NO

09708605

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A method of forming tubular irrigation drip tape includes the steps of a) extruding a web of material having a pair of longitudinally extending, substantially parallel marginal edges; b) heating a center area of the web between and substantially parallel to the marginal edges utilizing a first focused infrared heating device; c) applying one or more secondary flow path components to the center area; d) heating the marginal edges, utilizing a second and third focused infrared heating device; e) folding the web such that the marginal edges overlap to form a seam; and f) applying pressure to the seam.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
NELSON IRRIGATION CORPORATIONWALLA WALLA, WA77

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bren, Theodore J Walla Walla, WA 2 55
Harrold, Charles R Walla Walla, WA 7 36

Cited Art Landscape

Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (5)
4473191 Drip irrigation system employing flow regulation 38 1982
4430020 Drip irrigation hose 24 1982
4642152 Drip irrigation system employing flow regulation 23 1984
4749535 Method and apparatus for forming profiled plastic products involving extrusion, roller shaping and cutting 10 1986
5181532 Flow control 12 1992
 
HUNTLEY, MARK, CO-TRUSTEES OF THE DAVIES ALLPORT TRUST (2)
4984739 Drip irrigation hose 26 1988
5123984 Method and apparatus for forming ports in drip irrigation hose 28 1990
 
Drip Irrigation Systems, Ltd. (1)
5324379 Method and apparatus for producing drip irrigation conduit 15 1993
 
Hydromatic Ltd. (1)
5282916 Method and apparatus for making drip irrigation devices 17 1992
 
Micro Irrigation Technologies, Inc. (2)
5688072 Agricultural drip tape 8 1995
6120634 Method and apparatus for forming agricultural drip tape 14 1997
 
U.S. FARM PRODUCTS LIMITED (1)
4874132 Drip irrigation apparatus 16 1983
 
Hydroplan Engineering Ltd. (4)
5022940 Process of making a drip irrigation conduit 55 1989
5122044 Apparatus for making a drip irrigation conduit 12 1990
5207386 Flow emitter units moulds for use in the manufacture thereof 18 1991
5324371 Process for producing a drip irrigation conduit 24 1993
 
Seisan Nippon Sha, Ltd. (1)
4555282 Method of and means for bonding synthetic resin profiled fasteners to film substrate 67 1983
 
THE TORO COMPANY (1)
4880167 Irrigation hose with linear turbulent flow emitter 24 1988
 
T-Systems International, Inc. (6)
5282578 Self-protecting irrigation hose and method 22 1993
5333793 Drip irrigation hose with pressure compensation and method for its manufacture 16 1993
5458712 Process for forming drip irrigation hose with pressure compensation 12 1994
5522551 Drip irrigation hose and method for its manufacture 19 1994
5634595 Drip irrigation hose and method for its manufacture 12 1996
5722601 Drip irrigation hose and method of its manufacture 11 1996
 
ROBERTS IRRIGATION PRODUCTS, INC. (4)
4722759 Apparatus for fabricating drip irrigation tape 27 1985
5246171 Drip irrigation tape including a series of alternately offset elongated chambers 13 1992
5318657 Drip irrigation tape and method of manufacture 16 1993
5387307 Drip irrigation tape and method of manufacture 11 1994
 
MONSANTO COMPANY (1)
4323533 Rotary forming of articles 30 1980
 
Agrifim Irrigation International N.V. (1)
* 4702787 Process for making drip irrigation lines 13 1983
 
NAAN IRRIGATION SYSTEMS (1)
5271786 Method and apparatus for producing pipes for drip irrigation 24 1991
 
Townsend Controls Pty. Ltd. (1)
5076498 Irrigation tape and method of producing same 8 1989
 
FORD GLOBAL TECHNOLOGIES, INC. (1)
* 5522954 Non-contact bonding of plastics 21 1994
 
PLASTRO IRRIGATION SYSTEMS LTD. (2)
5163622 Drip irrigation line and method of making same 20 1990
5203503 Drip irrigation lines 25 1991
 
SONOCO DEVELOPMENT, INC. (1)
* 6350500 Tubular composite containers having folded unsupported film liners 3 1999
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
RAIN BIRD CORPORATION (2)
9743595 Drip emitter 0 2009
9485923 Elastomeric emitter and methods relating to same 0 2012
 
NELSON IRRIGATION CORPORATION (1)
* 2005/0258,279 Pressure compensating drip tape and related method 7 2004
 
D.R.T.S. ENTERPRISES LTD. (2)
7108205 Drip irrigation system employing parallel adjacent flowpaths 21 2005
* 2006/0196,977 DRIP IRRIGATION SYSTEM EMPLOYING PARALLEL ADJACENT FLOWPATHS 0 2005
* Cited By Examiner